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Homework Help: Derivative confirmation

  1. Sep 22, 2010 #1
    1. The problem statement, all variables and given/known data

    Derive the following:
    f(x)= (2+3sinx)(4+5cosx)tanx



    2. The attempt at a solution
    I derive it and got
    f'(x)=(4+5)tanx(3cosx)+(2+3sinx)(tanx(-5sinx)+sec2x(4+5cosx))

    Can someone confirm if this is right?
     
  2. jcsd
  3. Sep 22, 2010 #2
    Correct, good work
     
  4. Sep 22, 2010 #3
    Thanks!
    I put it first on WolframAlpha to compare, but it does the product rule the other way I did so I didnt felt like simplifying.
     
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